<!DOCTYPE html>
<html lang="en">

<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
</head>

<body>



	<script>
		
        // var username = "frank";

        // var info = `My name is ${username}`;

        // console.log(info);







		// arr map的使用 
		var arr = ['liuxiaolu','lile','weiliang',
				'frank','guanchen','yanglikai','xiaoqi'
			]

		arr.map((v,i)=> {
			console.log(v,i);
		})
	</script>
</body>

</html>